From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753348AbbEIGKK (ORCPT ); Sat, 9 May 2015 02:10:10 -0400 Received: from mail-wi0-f172.google.com ([209.85.212.172]:33158 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751436AbbEIGKE (ORCPT ); Sat, 9 May 2015 02:10:04 -0400 Date: Sat, 9 May 2015 08:09:59 +0200 From: Ingo Molnar To: Fenghua Yu Cc: "H. Peter Anvin" , Ingo Molnar , Thomas Gleixner , Dave Hansen , Asit K Mallick , Glenn Williamson , linux-kernel , x86 Subject: Re: [PATCH v3 Bugfix 0/6] xstate/fpu bug fixes Message-ID: <20150509060959.GB4156@gmail.com> References: <1431120665-36841-1-git-send-email-fenghua.yu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1431120665-36841-1-git-send-email-fenghua.yu@intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Fenghua Yu wrote: > From: Fenghua Yu > > This patchset is supposed to fix some xsave/xsaves/fpu related issues. So as I mentioned it to Dave Hansen already yesterday, I think the right, easily backportable fix would be to switch the kernel to 'standard format'. It's very close to the compacted format and its behavior is much more obvious and it doesn't change the context size on us. Then, on top of a known working kernel, we can re-introduce compacted format without pressure, with all the necessary signal frame conversion problems solved properly. Thanks, Ingo